The method of normalizing the crankshaft of a six-cylinder engine
A crankshaft and normalizing technology, which is applied to the field of normalizing and charging of the crankshaft of a six-cylinder engine, can solve the problems of processing, normalizing deformation, uneven force on the crankshaft, etc., and achieve the effect of avoiding normalizing deformation.
Active Publication Date: 2016-04-13
GUANGXI YUCHAI MASCH CO LTD
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Problems solved by technology
[0003] However, due to the self-heaviness of the large crankshaft, under high temperature (the normalizing temperature of the ductile iron crankshaft is above 860°C), it is easy to cause uneven stress on various parts of the crankshaft, resulting in bending deformation mainly caused by the self-weight of the crankshaft, that is, normalizing deformation
For example, the crankshaft of a six-cylinder engine (six-cylinder diesel engine), if the most points are not found to be in contact with the furnace bottom plate at the same time when the furnace is installed, if the crankshaft is placed horizontally on the furnace bottom plate at will, it will produce a bending deformation of more than 3mm, and the bending deformation exceeds 3mm. Accounted for about 30%, resulting in the large jump of each main journal and connecting rod journal, making it impossible to perform subsequent processing and scrapped
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[0017] A specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment. It should be understood that the "upper", "lower", "left", "right", "front" and "reverse" mentioned in the following embodiments of the present invention are all based on the directions shown in the figures, These words used to limit the direction are only for convenience of description, and do not mean to limit the specific technical solution of the present invention.
[0018] The method for normalizing the crankshaft of the six-cylinder engine of the present invention avoids excessive normalizing deformation of the crankshaft to be normalized by making the crankshaft to be normalized contact the furnace bottom plate at multiple points.
[0019] The crankshaft is the main rotating part of the diesel engine. After the connec...
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The invention discloses a six-cylinder diesel engine crankshaft normalizing furnace charging method. According to the method, a first balance block, a second balance block of a crankshaft, and an eleventh balance block and a twelfth balance block at the right end of the crankshaft, as well as a third connecting rod neck, a fourth connecting rod neck six contact points together contact a furnace bottom plate at the same time, thus ensuring the contact of most points of the normalizing crankshaft with the furnace bottom plate, and avoiding excessive normalizing deformation generated by the to-be normalized crankshaft. Also, a lever type crankshaft charge-discharge cart is utilized to load and transport large crankshafts, thus improving the simplicity of crankshaft charging and discharging operation.
Description
technical field [0001] The invention relates to the field of engines, in particular to a method for normalizing and charging a crankshaft of a six-cylinder engine. Background technique [0002] When the large ductile iron crankshaft is being normalized, the usual furnace loading method is to place the crankshaft horizontally on the furnace floor at random, and the most point of the crankshaft is not found to be in contact with the furnace floor. [0003] However, due to the self-heaviness of the large crankshaft, under high temperature (the normalizing temperature of the ductile iron crankshaft is above 860°C), it is easy to cause uneven stress on various parts of the crankshaft, resulting in bending deformation mainly caused by the self-weight of the crankshaft, that is, normalizing deformation. For example, the crankshaft of a six-cylinder engine (six-cylinder diesel engine), if the most points are not found to be in contact with the furnace bottom plate at the same time w...
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IPC IPC(8): C21D9/30
Inventor 杨美全李勇强
Owner GUANGXI YUCHAI MASCH CO LTD